Make a lib (from C-Code) and get Esgrid!

[IceSoft]

Anyone else?

Maybe I can do it.

[MachineCode]

Thanks, LJ.

[Shardik]

milan1612's pdf2text.zip contains the following code example:

Code: Select all

Prototype.l ExtractPDFTextProto(PdfFile.s, OutputFile.s)
If OpenLibrary(0, "pdf2text.dll")
  Global ExtractPDFText.ExtractPDFTextProto = GetFunction(0, "ExtractPdfText")
Else
  End
EndIf

If Not ExtractPDFText("c:\LTB2658_1.pdf", "c:\LTB2658_1.txt")
  MessageRequester("Error", "Could not extract pdf text!")
EndIf

Although this code example works it contains a nasty bug which
you will experience if you put the ExtractPdfText function into a
procedure: you will see a crash in the procedure because you have
to use PrototypeC instead of Prototype...

For an explanation take a look into the PureBasic blog:

Here we get to the reason why it works outside of a procedure and not inside. A call to a procedure stores the address where execution continues after the procedure on the stack as well. If a function call inside the procedure leaves the stack in a mess, then the ProcedureReturn cannot find the address to continue and uses a wrong value instead which leads to a crash. Outside of a procedure, nobody will notice the stack mess, as the stack is only used for function calls.